CSP: block-all-mixed-content - HTTP 编辑

Obsolete

This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

The HTTP Content-Security-Policy (CSP) block-all-mixed-content directive prevents loading any assets over HTTP when the page uses HTTPS.

All mixed content resource requests are blocked, including both active and passive mixed content. This also applies to <iframe> documents, ensuring the entire page is mixed content-free.

The upgrade-insecure-requests directive is evaluated before block-all-mixed-content. If the former is set, the latter does nothing, so set one directive or the other – not both, unless you want to force HTTPS on older browsers that do not force it after a redirect to HTTP.

Syntax

Content-Security-Policy: block-all-mixed-content;

Examples

Content-Security-Policy: block-all-mixed-content;

<meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">

To disallow http assets on a more granular level, you can also set individual directives to https:. For example, to disallow nonsecure HTTP images:

Content-Security-Policy: img-src https:

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• Content-Security-Policy
• upgrade-insecure-requests
• Mixed content